126891112 has 8 divisors (see below), whose sum is σ = 237920850. Its totient is φ = 63445552.

The previous prime is 126891103. The next prime is 126891119. The reversal of 126891112 is 211198621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73513476 + 53377636 = 8574^2 + 7306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×126891112² = 32202708609193088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126891119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7930687 + ... + 7930702.

Almost surely, 2^126891112 is an apocalyptic number.

It is an amenable number.

126891112 is a deficient number, since it is larger than the sum of its proper divisors (111029738).

126891112 is a wasteful number, since it uses less digits than its factorization.

126891112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15861395 (or 15861391 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 126891112 is about 11264.5955098264. The cubic root of 126891112 is about 502.5088727260.

The spelling of 126891112 in words is "one hundred twenty-six million, eight hundred ninety-one thousand, one hundred twelve".